why hydraulic hose have no pressure


Why Hydraulic Hoses Have No Pressure: Understanding the Issue and Finding Solutions


Hydraulic hoses play a crucial role in many industries where they are used to transmit fluid power, allowing machinery to perform various tasks efficiently. However, there are times when these hoses fail to maintain the required pressure, resulting in a loss of productivity and potential safety hazards. In this article, we will explore the reasons behind hydraulic hoses losing pressure and discuss possible solutions to address this issue effectively.

I. Common Causes of Low Pressure:

1. Hose Leaks:

One of the most common reasons hydraulic hoses experience low pressure is due to leaks. Leaks can occur for several reasons, such as wear and tear, damage from external factors, or improper installation. When a hose is leaking, the fluid escapes, causing a decrease in pressure within the system.

2. Hose Blockages:

Another common cause of low hydraulic pressure is blockages within the hose. This can happen when debris or dirt accumulates over time, restricting the flow of fluid. Blockages not only reduce pressure but can also lead to additional issues like overheating or system failure.

3. Internal Degradation:

Hydraulic hoses are designed to withstand high pressure, but over time, the internal structure of the hose can degrade due to factors like chemical exposure, temperature fluctuations, or age. This degradation can lead to a loss of pressure, compromising the overall efficiency of the hydraulic system.

4. Faulty Connectors or Fittings:

In some cases, the loss of pressure can be attributed to faulty connectors or fittings used in the hydraulic system. If the connectors are not properly sealed or if the fittings are worn out, they can cause leaks, leading to a decrease in pressure.

5. Insufficient Hydraulic Fluid:

Maintaining the appropriate level of hydraulic fluid is crucial for achieving optimum pressure in a hydraulic system. Low fluid levels can result from leaks or improper maintenance, leading to reduced pressure within the system.

II. Diagnosing the Issue:

1. Visual Inspection:

The first step in diagnosing and resolving low hydraulic pressure is conducting a visual inspection of the entire hydraulic system. Inspect the hoses, connectors, and fittings for any signs of leaks, damage, or wear. Look for visible blockages or kinks in the hoses that might obstruct fluid flow.

2. Pressure Gauge Testing:

Using a pressure gauge, check the pressure levels at various points in the hydraulic system. This will help identify any significant pressure drops or inconsistencies. Comparing the readings with the system's design specifications will indicate whether low pressure is an issue.

3. Fluid Analysis:

Taking a sample of the hydraulic fluid for analysis can provide valuable insights into the condition of the system. A fluid analysis test will identify any contaminants, water content, or depletion of additives in the fluid, helping to determine if these factors contribute to low pressure.

III. Solutions to Restore Hydraulic Pressure:

1. Repair or Replace Leaking Hoses:

If leaks are identified, it is essential to repair or replace the affected hoses promptly. This may involve tightening fittings, using sealants, or replacing worn-out sections of the hose. Regular inspection and maintenance can prevent leaks from occurring in the first place.

2. Clearing Blockages:

To remove blockages, flush the hydraulic system with an appropriate cleaning agent or use compressed air to dislodge the debris. Regularly cleaning and maintaining hydraulic filters will prevent blockages from occurring in the future.

3. Hose Replacement:

If internal degradation or damage is severe, replacing the hydraulic hose might be necessary to restore proper pressure. Always choose hoses that are compatible with the system's specifications and ensure correct installation.

4. Examining Connectors and Fittings:

Inspect all connectors and fittings for damage or wear. Replace any faulty components and ensure proper sealing is achieved to prevent leaks and maintain the required pressure.

5. Maintain Proper Fluid Levels:

Regularly check hydraulic fluid levels and top up if needed. If fluid levels consistently drop, investigate the cause of the loss and rectify the issue immediately. Proper fluid maintenance will help maintain optimum pressure within the hydraulic system.


Understanding why hydraulic hoses lose pressure is crucial for maintaining the efficiency and safe operation of hydraulic systems. By identifying common causes such as hose leaks, blockages, internal degradation, faulty connectors, or insufficient fluid, appropriate solutions can be implemented promptly. Regular inspection, testing, and maintenance are essential to prevent pressure loss and ensure the longevity of hydraulic systems. Remember, consulting with experts or hydraulic specialists can be beneficial in resolving complex issues or for professional guidance.


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